Hi Adrew,
Sorry for delay in response. currently I'm using Select with Union :-) .
I would like to know is there any Built-in Hive UDF available for
unpivoting .
On 3/30/2016 2:23 PM, Andrew Sears wrote:
From mytable
Select id, 'mycol' as name, col1 as value
Union
Select id, 'mycol2' as name, col2 as value
Something like this might work for you?
Cheers,
Andrew
On Mon, Mar 28, 2016 at 7:53 PM, Ryan Harris
<ryan.har...@zionsbancorp.com <mailto:ryan.har...@zionsbancorp.com>>
wrote:
collect_list(col) will give you an array with all of the data from
that column
However, the scalability of this approach will have limits.
-----Original Message-----
From: mahender bigdata [mailto:mahender.bigd...@outlook.com]
Sent: Monday, March 28, 2016 5:47 PM
To: user@hive.apache.org
Subject: Best way of Unpivoting of hiva table data. Any Analytic
function for unpivoting
Hi,
Has any one implemented Unpivoting of Hive external table data. We
would
like Convert Columns into Multiple Rows. We have external table,
which
holds almost 2 GB of Data. is there best and quicker way of
Converting
columns into Row. Any Analytic functions available in Hive to do
Unpivoting.
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